/* ═══════════════════════════════════════════════════════════
   SHS Elective System — Premium School Portal
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  --green-900: #14532d;
  --green-800: #166534;
  --green-700: #15803d;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-400: #4ade80;
  --green-100: #dcfce7;
  --green-50:  #f0fdf4;

  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;

  --primary:        var(--green-700);
  --primary-dark:   var(--green-800);
  --primary-light:  var(--green-600);
  --primary-pale:   var(--green-50);
  --primary-border: #bbf7d0;

  --bg-page:  #3d9494;
  --bg-card:  #ffffff;
  --bg-input: #eef8f7;
  --border:   #9cc8c5;

  --text-primary:   var(--slate-900);
  --text-secondary: var(--slate-500);
  --text-dim:       var(--slate-400);

  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  14px;
  --r-xl:  18px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.06);
  --shadow-green: 0 4px 20px rgba(22,163,74,.2);
}

/* ── Reset ───────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg-page);
  color:var(--text-primary);
  line-height:1.6;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary-light);text-decoration:none}
a:hover{text-decoration:underline}

/* ── Remove old hacker bg effects ───────────────────────── */
.bg-grid,.bg-glow,.bg-glow-1,.bg-glow-2{display:none!important}

/* ── Page Wrapper ────────────────────────────────────────── */
.page-wrapper{
  display:flex;
  flex-direction:column;
  align-items:center;
  min-height:100vh;
  padding:36px 16px 56px;
}

/* ── School Header / Top Nav ─────────────────────────────── */
.school-header{
  width:100%;
  background:linear-gradient(135deg,var(--green-900) 0%,var(--green-700) 60%,var(--green-600) 100%);
  padding:18px 32px;
  display:flex;
  align-items:center;
  gap:18px;
  box-shadow:0 4px 20px rgba(20,83,45,.3);
}
.school-header .logo-ring{
  width:52px;height:52px;
  border-radius:14px;
  background:rgba(255,255,255,.15);
  border:2px solid rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;
  font-size:1.55rem;
  flex-shrink:0;
}
.header-text{display:flex;flex-direction:column;gap:2px}
.school-header h1{
  font-size:1rem;
  font-weight:800;
  color:#fff;
  letter-spacing:-.01em;
  line-height:1.25;
  background:none;
  -webkit-text-fill-color:#fff;
  margin:0;
}
.header-sep{
  color:rgba(255,255,255,.45);
  font-weight:400;
  margin:0 6px;
}
.school-header p{
  font-size:.72rem;
  color:rgba(255,255,255,.65);
  margin:0;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:.08em;
}

/* ── Site Footer ─────────────────────────────────────────── */
.site-footer{
  position:fixed;
  bottom:0;left:0;right:0;
  text-align:center;
  padding:5px;
  font-size:.6rem;
  color:rgba(0,0,0,.18);
  pointer-events:none;
  user-select:none;
  letter-spacing:.06em;
  font-weight:500;
}

/* ── Progress Steps ──────────────────────────────────────── */
.steps{
  display:flex;align-items:center;
  margin-bottom:28px;
  padding:0 16px;
  gap:0;
}
.step{
  display:flex;flex-direction:column;
  align-items:center;gap:6px;
}
.step-circle{
  width:36px;height:36px;
  border-radius:50%;
  border:2px solid var(--border);
  background:var(--bg-card);
  color:var(--text-dim);
  font-size:.82rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  transition:all .25s;
  box-shadow:var(--shadow-sm);
}
.step.active .step-circle{
  border-color:var(--green-600);
  background:var(--green-700);
  color:#fff;
  box-shadow:0 0 0 4px rgba(22,163,74,.18);
}
.step.done .step-circle{
  border-color:var(--green-600);
  background:var(--green-50);
  color:var(--green-700);
}
.step-label{
  font-size:.68rem;font-weight:600;
  color:var(--text-dim);
  text-transform:uppercase;letter-spacing:.06em;
}
.step.active .step-label,.step.done .step-label{color:var(--green-700)}
.step-connector{
  height:2px;width:40px;
  background:var(--border);
  margin-bottom:20px;flex-shrink:0;
  transition:background .25s;
}
.step-connector.done{background:var(--primary-border)}

/* ── Card ────────────────────────────────────────────────── */
.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  padding:36px;
  width:100%;max-width:520px;
  box-shadow:var(--shadow-md);
}
.card-wide{max-width:900px}
.card-header{margin-bottom:26px}
.card-header h2{
  font-size:1.3rem;font-weight:800;
  color:var(--text-primary);
  letter-spacing:-.02em;margin-bottom:6px;
}
.card-header p{
  font-size:.88rem;
  color:var(--text-secondary);
  line-height:1.55;
}
.divider{border:none;border-top:1px solid var(--border);margin:28px 0}

/* ── Forms ───────────────────────────────────────────────── */
.form-group{display:flex;flex-direction:column;gap:7px;margin-bottom:18px}
.form-group label{
  font-size:.78rem;font-weight:700;
  color:var(--slate-700);
  text-transform:uppercase;letter-spacing:.05em;
}
.form-control{
  background:#fff;
  border:1.5px solid var(--border);
  border-radius:var(--r-md);
  padding:12px 15px;
  font-size:.95rem;font-family:inherit;
  color:var(--text-primary);
  transition:border-color .18s,box-shadow .18s;
  width:100%;
  box-shadow:var(--shadow-sm);
}
.form-control:focus{
  outline:none;
  border-color:var(--green-600);
  box-shadow:0 0 0 3px rgba(22,163,74,.13);
  background:#fff;
}
.form-control::placeholder{color:var(--text-dim)}
select.form-control{cursor:pointer}
.otp-input{
  text-transform:uppercase;
  font-size:1.5rem;letter-spacing:.22em;
  font-weight:800;text-align:center;
  font-family:'Courier New',monospace;
}
.required{color:#ef4444}
.form-grid{display:flex;flex-direction:column;gap:0}
.form-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:520px){.form-grid-2{grid-template-columns:1fr}}

/* ── Buttons ─────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;padding:12px 24px;
  border-radius:var(--r-md);
  font-family:inherit;font-size:.9rem;font-weight:700;
  cursor:pointer;border:1.5px solid transparent;
  text-decoration:none;transition:all .18s ease;
  white-space:nowrap;position:relative;overflow:hidden;
}
.btn-primary{
  background:linear-gradient(135deg,var(--green-700),var(--green-600));
  color:#fff;border-color:var(--green-700);
  box-shadow:0 4px 14px rgba(22,163,74,.3);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--green-800),var(--green-700));
  box-shadow:0 6px 20px rgba(22,163,74,.38);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  background:#fff;color:var(--green-700);
  border-color:var(--border);
  box-shadow:var(--shadow-sm);
}
.btn-outline:hover{
  background:var(--green-50);
  border-color:var(--primary-border);
  color:var(--green-800);
}
.btn-danger{
  background:#fff;color:#dc2626;
  border-color:#fecaca;
}
.btn-danger:hover{background:#fef2f2}
.btn-full{width:100%}
.btn-sm{padding:8px 16px;font-size:.82rem}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}

/* Spinner */
.spinner{
  display:none;width:17px;height:17px;
  border:2px solid rgba(255,255,255,.3);
  border-top-color:#fff;
  border-radius:50%;animation:spin .65s linear infinite;
}
.btn-outline .spinner{border-color:rgba(22,163,74,.25);border-top-color:var(--green-700)}
.btn.loading .spinner{display:block}
.btn.loading .btn-text{opacity:.65}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── Alerts ──────────────────────────────────────────────── */
.alert{
  padding:13px 16px;
  border-radius:var(--r-md);
  font-size:.875rem;line-height:1.5;
  margin-bottom:18px;font-weight:500;
  display:flex;align-items:flex-start;gap:8px;
}
.alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#15803d}
.alert-error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.alert-warning{background:#fffbeb;border:1px solid #fed7aa;color:#92400e}

/* ── Slot Section ────────────────────────────────────────── */
.slot-section{margin-bottom:10px}
.slot-header{
  display:flex;align-items:center;
  gap:14px;margin-bottom:6px;
  padding-bottom:12px;
  border-bottom:1px solid var(--border);
}
.slot-badge{
  background:var(--green-700);color:#fff;
  font-size:.68rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.07em;
  border-radius:100px;padding:5px 13px;
  white-space:nowrap;flex-shrink:0;
  box-shadow:0 2px 8px rgba(22,163,74,.25);
}
.slot-header h3{font-size:1rem;font-weight:700;color:var(--text-primary);margin:0}
.slot-subtext{font-size:.78rem;color:var(--text-secondary);margin-top:2px}

/* ── Subject Cards ───────────────────────────────────────── */
.subjects-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(210px,1fr));
  gap:12px;margin-top:14px;
}
@media(max-width:640px){.subjects-grid{grid-template-columns:1fr}}
.subject-card{
  background:#fff;
  border:2px solid var(--border);
  border-radius:var(--r-lg);
  padding:16px;
  cursor:pointer;
  transition:border-color .18s,box-shadow .18s,transform .18s,background .18s;
  position:relative;
  display:flex;flex-direction:column;gap:7px;
  user-select:none;
}
.subject-card input[type="radio"]{display:none}
.subject-card:hover:not(.card-full):not(.card-conflict){
  border-color:var(--green-600);
  box-shadow:0 4px 16px rgba(22,163,74,.15);
  transform:translateY(-2px);
  background:var(--green-50);
}
.subject-card.selected{
  border-color:var(--green-600);
  background:var(--green-50);
  box-shadow:0 0 0 4px rgba(22,163,74,.15),0 4px 16px rgba(22,163,74,.12);
}
.check-icon{
  position:absolute;top:13px;right:13px;
  width:24px;height:24px;
  background:var(--green-600);color:#fff;
  border-radius:50%;font-size:.75rem;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:scale(.4);
  transition:opacity .2s,transform .22s cubic-bezier(.34,1.56,.64,1);
  box-shadow:0 2px 8px rgba(22,163,74,.35);
}
.subject-card.selected .check-icon{opacity:1;transform:scale(1)}
.subject-code{
  font-size:.65rem;font-weight:700;
  color:var(--green-700);
  text-transform:uppercase;letter-spacing:.07em;
  background:var(--green-50);
  border:1px solid var(--primary-border);
  border-radius:100px;padding:3px 9px;
  display:inline-block;width:fit-content;
}
.subject-name{
  font-size:.9rem;font-weight:700;
  color:var(--text-primary);
  line-height:1.3;padding-right:28px;
}
.subject-desc{
  font-size:.75rem;
  color:var(--text-secondary);
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ── Success Page ────────────────────────────────────────── */
.success-icon{font-size:3.5rem;margin-bottom:14px;display:block}
.success-selections{display:flex;flex-direction:column;gap:10px;margin:22px 0}
.selection-row{
  display:flex;align-items:center;gap:14px;
  background:var(--green-50);
  border:1.5px solid var(--primary-border);
  border-radius:var(--r-lg);padding:14px 18px;
  transition:transform .15s;
}
.selection-row:hover{transform:translateX(4px)}
.slot-num{
  width:38px;height:38px;
  background:linear-gradient(135deg,var(--green-700),var(--green-600));
  color:#fff;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:.9rem;flex-shrink:0;
  box-shadow:0 3px 8px rgba(22,163,74,.3);
}
.subject-info small{
  display:block;font-size:.7rem;
  color:var(--green-700);font-weight:700;
  text-transform:uppercase;letter-spacing:.05em;
}
.subject-info strong{font-size:.9rem;color:var(--text-primary)}

/* ── OTP chips ───────────────────────────────────────────── */
.otp-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(165px,1fr));
  gap:10px;margin-top:14px;
}
.otp-chip{
  background:var(--green-50);
  border:1.5px solid var(--primary-border);
  border-radius:var(--r-md);
  padding:11px 14px;
  font-family:'Courier New',monospace;
  font-weight:800;font-size:.95rem;
  letter-spacing:.13em;color:var(--green-800);
  display:flex;align-items:center;justify-content:space-between;
}
.copy-btn{
  background:var(--green-700);color:#fff;
  border:none;border-radius:var(--r-sm);
  padding:4px 9px;font-size:.72rem;font-weight:700;
  cursor:pointer;transition:background .15s;
}
.copy-btn:hover{background:var(--green-800)}

/* ── Admin Layout ────────────────────────────────────────── */
.admin-layout{display:flex;min-height:100vh;background:var(--bg-page)}
.admin-sidebar{
  width:240px;min-height:100vh;
  background:linear-gradient(180deg,var(--green-900) 0%,var(--green-800) 100%);
  display:flex;flex-direction:column;
  padding:0;flex-shrink:0;
  box-shadow:4px 0 16px rgba(0,0,0,.12);
}
.admin-brand{
  font-size:1.05rem;font-weight:800;color:#fff;
  padding:24px 22px 20px;
  border-bottom:1px solid rgba(255,255,255,.1);
  margin-bottom:8px;letter-spacing:-.01em;
  display:flex;align-items:center;gap:10px;
}
.admin-brand span{color:var(--green-400)}
.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 22px;
  font-size:.88rem;font-weight:600;
  color:rgba(255,255,255,.6);
  background:transparent;border:none;
  cursor:pointer;width:100%;text-align:left;
  text-decoration:none;
  transition:background .15s,color .15s;
  font-family:inherit;
  border-left:3px solid transparent;
}
.nav-link:hover{background:rgba(255,255,255,.07);color:rgba(255,255,255,.9)}
.nav-link.active{
  background:rgba(255,255,255,.1);
  color:#fff;
  border-left-color:var(--green-400);
}
.admin-content{flex:1;padding:36px;overflow-x:auto}
.admin-content h2{
  font-size:1.35rem;font-weight:800;
  color:var(--text-primary);
  margin-bottom:22px;
  letter-spacing:-.02em;
}
.table-wrap{overflow-x:auto;border-radius:var(--r-lg)}
.search-bar{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.search-bar input{flex:1;min-width:200px}

@media(max-width:768px){
  .admin-layout{flex-direction:column}
  .admin-sidebar{
    width:100%;min-height:auto;
    flex-direction:row;flex-wrap:wrap;
    padding:12px;gap:4px;
  }
  .admin-brand{border-bottom:none;padding:8px 12px;font-size:.88rem}
  .nav-link{
    padding:8px 12px;font-size:.78rem;
    border-radius:var(--r-md);border-left:none;flex:0 0 auto;
  }
  .nav-link.active{border-left:none;background:rgba(255,255,255,.15)}
  .admin-content{padding:18px}
}

/* ── Stats Grid ──────────────────────────────────────────── */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(170px,1fr));
  gap:16px;margin-bottom:28px;
}
.stat-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  padding:22px;
  display:flex;flex-direction:column;gap:10px;
  box-shadow:var(--shadow-md);
  transition:transform .18s,box-shadow .18s;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.stat-icon{font-size:1.8rem}
.stat-val{
  font-size:2.2rem;font-weight:900;
  color:var(--green-700);line-height:1;
  letter-spacing:-.04em;
}
.stat-lbl{
  font-size:.72rem;color:var(--text-secondary);
  font-weight:700;text-transform:uppercase;letter-spacing:.06em;
}

/* ── Data Table ──────────────────────────────────────────── */
.data-table{
  width:100%;border-collapse:collapse;
  font-size:.875rem;background:#fff;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-md);
}
.data-table thead{
  background:linear-gradient(135deg,var(--green-800),var(--green-700));
}
.data-table th{
  padding:14px 16px;text-align:left;
  font-size:.72rem;font-weight:700;
  color:rgba(255,255,255,.9);
  text-transform:uppercase;letter-spacing:.06em;
  white-space:nowrap;
}
.data-table td{
  padding:12px 16px;
  border-bottom:1px solid var(--slate-100);
  color:var(--text-primary);
  vertical-align:middle;
}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:var(--green-50)}

/* ── Badges ──────────────────────────────────────────────── */
.badge{
  display:inline-flex;align-items:center;gap:4px;
  padding:4px 11px;border-radius:100px;
  font-size:.72rem;font-weight:700;white-space:nowrap;
}
.badge-used{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.badge-available{background:#fefce8;color:#a16207;border:1px solid #fde047}

/* ── Utilities ───────────────────────────────────────────── */
.flex{display:flex}
.gap-3{gap:12px}
.mt-4{margin-top:16px}
.mt-6{margin-top:24px}
.justify-between{justify-content:space-between}
.text-center{text-align:center}
.text-sm{font-size:.85rem}
.text-muted{color:var(--text-secondary)}
.hidden{display:none}
.no-print{}

/* ── Responsive ──────────────────────────────────────────── */
@media(max-width:640px){
  .card{padding:24px 20px;border-radius:var(--r-xl)}
  .school-header{padding:16px 20px}
  .school-header h1{font-size:1rem}
  .step-connector{width:22px}
  .step-label{font-size:.62rem}
  .stats-grid{grid-template-columns:1fr 1fr}
  .subjects-grid{grid-template-columns:1fr}
  .slot-header{flex-wrap:wrap;gap:8px}
  .admin-content h2{font-size:1.1rem}
}
@media(max-width:400px){
  .steps{display:none}
  .stats-grid{grid-template-columns:1fr}
  .school-header .logo-ring{width:40px;height:40px;font-size:1.2rem}
}

@media print{
  .bg-grid,.bg-glow,.no-print{display:none!important}
  body{background:#fff!important}
  .card{border:1px solid #ccc!important;box-shadow:none!important}
  .school-header{background:#166534!important;print-color-adjust:exact}
}